Skiving-machine.



E. NA LL & W- G. TYLER. smvme MACHINE. APPLICATION FILED MAY 13, 1-914. 1 1 1 1 1 70, Patented Sept. 22, 1914.

B. NALL & W. 0. TYLER.

- SKIVING MAGHINEB APPLICATION FILED MAY 13, 1914.

Patented .Sept. 22, 19m

.2" SHEETS-SHEET 2.

I I 5- I E owAs l a NA t2. E WILLIAM (SIR LEN 4% W' AM Y made by hand from stock laid on a table, an

more, the tables occupy a vast amount of of Waste due to inaccuracies of the workrmrrnn .s rarns Parana @Fhl JE.

EDWABD NALL AND WILLIAM C. TYLER, OF,AKRON, OHIO, ASSIGNOES TO THE GOOD- YEAR TIRE AND RUBBER, COMPANY, OF AKRON, OHIO, A. CORPOBATION OF OHIO.

SKIVING-MACHINE Specification of Letters Eatent. Patented Sept. 22, 914

Litinltd. I

Application filed. may 13, 1914, Serial No. $38,353.

anism; and, Fig. 5', is a view similar to Fig.

To all whom it may concern:

a of a modified tool carriage.

Be it known that we, EDWARD Nam. and WILLIAM C. TYLER, citizens of the United States, residing at Akron, in the county of Summit and Stateof Qhio, have invented new and useful Improvements in Skiving- Machines, of which the following is a specification.

This invention relates to machines for skiving or beveling the edges of strips of material, and is particularly adapted for cutting a plurality of longitudinal strips with skived or beveled edges from a wide continuous strip of material, from which strips the highly-resilient inner tubes of double-tube pneumatic tires are formed. Briefly, heretofore these strips have been be assumed that the portion of the device which is shown to the right in Fig. i is the containing the gears is the left end of the machine and that containing the belt pulleys, the right of the machine.

The dense embodies a supporting frame work comprising a pair of legs 1 and a second pair 2 and on the upperv end of these pairs of legs is mounted a table 3 preferably hollowed out at t for the sake of lightness. The frame is provided with closed ends and the side faces of the table 3 intermediate the ends thereof are provided with concave portions 5 and 6. I

The upper face of the table immediately adjacent to the concave portions 5 and 6 is slightly downwardly -inclined at 7 for a purpose to be later described. Secured to the front face of thetable 3 and positioned adjacent to the concave portion 6 are a pair of horizontal brackets 8, provided in their opposing faces with dovetailed ways to slidably hold bearings 9 having dove-tailed projections engaging the dove-tailed ways in the bracket. Mounted in the bearings 9 are the projecting ends of an axle 11 of a roller 12. The normal position of the roller 12 is such that its outer face projects inwardly into the concave portion 6 thereby positioning the roller closerto the table and the other mechanism carried thereby. On the opposite side of the table 3 and near to the ends of the concaveportion 5 are a pair of brackets 13 in which are mounted a shaft it is to be understood that changes, variala-on which is mounted a driving roller 15 tions and modifications can be resorted to projecting into the concave portion 5. which come within the scope of the matter Adapted to extend around the two rollers hereinafter claimed.

In'the drawings in which similar reference numerals indicate like parts in the different figures, Figure 1, is a view in end elevation of a machine embodying this invention; Fig. 2, is a side elevation of the'same looking from the right .in Fig. 1; Fig. 8, is a transverse sectional viewof a portion of the upper part of the machine; Fig. 4:, is a. vertical, central, longitudinal, sectional view of the skiving tool audits supporting mechoperation requiring great skill in cutting thehighly-resilient, tough and tacky rub her with any degree of accuracy; furtherspace, and there isa relatively-large amount men; and finally, the result of skiving by hand is not s tisfactory in view of the fact that the amp or .clination of the skive or bevel does not give, under ordinary circumstances, a suificiently wide inclined portion to make the most perfect joint.

With the foregoing and other objects in view, the invention consists in the novel construction, combination and arrangement of parts constituting the invention to be hereinafter specifically described and illustrated in the accompanying drawings, which form a part hereof wherei is shown the referred embodiment of the invention, but

tensible belt-'16 usually composed of rubber of the table 3 and the opposite portion to pass below the table, Adjusting screws 65 constitute means toshift the position of the roller 12 for maintaining the-belt taut at all times when-desired to cause the-upper working portion of the belt to lie in snug engage ment with the upper edge of the table 8.

In the description which follows, it will i 12 and 15 is a heavy and preferably inex and fabric, one portion of which is adapted to pass transversely over the upper surface front of the machine, and the portion shown 42-3 is provided with a longitudinally-extend- Rotatably mounted in bearings 18 secured to the ends of the table 3 is a driving shaft 19 bearing at the right end tightand loose pulleys 20 which are adapted to receive a belt for securing rotation of the driving shaft. The left end of the driving shaft 19 bears a large gear 21 and a. sni'aller gear 22 both fixedly secured thereto. Secured in a suitable bracket "23 on the left outer face of the table 3 is a stub-shaft 24 hearing a fixedly mounted gear 25 adapted to intermesh with. the gear 22 and splined on the shaft 2st is a suitable clutch member 26- provided in the peripheral face thereof with a gi'oove 27 to receive the nogs 28 of a bifurcated clutch lever 29 fulcrumed at 30 by which shifting motion of the clutch member is obtained. Loosely mounted on the shaft 24 is a gear 31 the hub of which is provided with a clutch-forn'iing member 32 adapted to interei'igage with the clutch member 26 when the latter is shifted. Mounted on the shaft'l is a large gear 33 adapted to intermesh with the gear 31. From this it will be seen that motion may be transmitted from the driving shaft l to the shaft 14 which revolves the driving roller 15 for operating the belt 16, and this motion may be interrupted or resumed through the medium of the clutch lever 29.

The mechanism for supporting the skiving tool comprises a frame 3 1 provided with depending portions 35 which are seated on the upper faces of the ends of the table immediately above the positions occupied by the legs 1 and and between these portions the inner face of the frame is cut away at 36 to provide a transversely-extending opening or arch over the belt 16. The frame 3% is provided with laterally-extending lugs 23? provided with apertures to receive pivot bolts 38, and positioned on the upper face of the table 3 are cooperating apertured lugs 39 to provide a hinged connection between the frame 3% and the table 3, to permit the frame to be swung upwardly for ready access to the belt 16 and the material carried thereby. The frame 3i comprises a pair of 'longitudinally-extending members l0 united at their ends to provide a longitudinallyoxtending slot between them. The opposing faces of the members t0 are provided with opoositcly-disposed and parallel ribs l1 constituting ways. Mounted on the upper faces of the ends of the frame 31- are a pair of alined bearings i2 in which is mounted a shaft which bears at its left end a gear 44. Revolubly mounted on a stud i5 attached to the left end of the frame 3- is an idler gear 45 which is adapted to intermesh with the gears 21. and 14 and transm t motion from one to the other. The shaft in g key 1-6. r

mounted on the ribs 41 of the members 40 are a plurality of skiving tool-carriages de nominated generally by the reference numeral at? and as they are all similar, a description of one is believed to be sufficient, reference being direetedto Figs. 3 and 4.

Each skiving tool-carriage comprises a body portion 48 provided laterally with grooves or channels to receive the ribs 41 and be thereby supported to permit its movement longitudinally of the device. A portion of the upper face of the body portion 48 is provided with an inclined portion 49 and a portion of the lower face of the carriage is similarly provided with an inclined, portion 50. Mounted in the inclined portion 49 is a bearing 51 and in the lower face is a thrust bearing 52 and rotatably mounted in these bearings is an inclined shaft 53 which bears at its upper end a bevel gear 54 and'at its lower end a disk-shaped skiv/ ing tool 55 provided with a cutting edge. Mounted on the horizontal portion of the upper face of the body 48 is a bearing 56 and in this hearing is rotatably mounted a sleeve 57 provided with a key-way to receive the key so and further provided at one end with a bevel-gear 58 adapted to iutermcsh with the gear 54. The lower face of the body portion 48 is also provided at each side thereof with. a pair of projecting lugs v59 provided with vertically-arranged slots 60 to receive the ends of the ins 61 to permit the pins to move vert-ieall y. The pms 61 constitute axles for cylindrical blocks 62 to which is secured, by being bent partly thereabout, a pressure plate 63 the median portion of which is downwardly-convened and is adapted to engage the material to be skived, which passes over thetable 3 supported on the upper face'of the belt .16, and the portion of the pressure plate 63 which engages the material is adaptedv to press the material against the belt at a point approximately opposite or near the point where n the material is engaged by the cuttingedge of the skivin tool 55.

The operation of'the device is as follows: Power is applied through the. medium of a 'belt to one pulley 20 on the shaft 19. This motion is transmitted to the belt as has been before described, and the rotation of the shaft 19 induces the rapid rotation of the shaft 43 which rotates each of the sleeves 57,- thereby high speed. The material, usually in continuous strips, is fed over thenpper face of the belt 16 and is cut into strips having skived or beveled edges by the skiving knives 55. It will be noted that the transverse positions of the skiving knives may be altered at will and from this it will follow that the strips may be arbitrarily changed. Should.

Adapted to be longitudinally. shiftably at any time be necessary to sto the operation of a slaving-tool without mterrupting' 130 operating each skiving tools 55 at 4 description of the same is believed to be uneta-11,1742;

above said belt, an inclined rotary skiving 'tool mounted on said carriage, and a yieldable pressure member arranged to engage material fed to said tool by said belt at a point where said skiving tool engages said material for holding it in firm contact with said belt.

4'. A skiving m chine comprising a supporting table, driving and idler rolls mounted on opposite sides thereof, a traveling belt on said rolls arranged to move over the upperface of said table, supporting means mounted above said traveling belt, a carriage on said means, said carriage being provided with a skiving tool adapted to skive or bevel material fed to said tool by said belt, a projecting lug on each side of said carriage, and a. yieldable member secured to said lugs adapted to frictionally engage the material fed by said belt to said skivin tool.

5. A skiving machine comprising a supporting table, driving and idler rolls mounted on opposite sides thereof, a traveling belt on said rolls arranged to move over the 11 per face of said table, a supporting frame a ove said belt, a carriage adjustable on said frame longitudinally thereof and provided with a rotary skiving tool for skiving or beveling material fed to said tool by said belt, and a yieldable member carried by said carriage vertically movable with respect to said carriage and adapted to frictionally engage the material fed by said beltto said slriving tool. i

6. A skiving machine embodying a moving platform constituting a supportin medium for material to be skived, a shiftable carriage positioned above said platform, a rotary slnving tool supported thereby and adapted to engage the material on said platthe operation of the others, the desired carriage is shifted to the right in Fig. 2 until the sleeve 57 carried thereby is moved out of engagement with the key 46. While only two skiving-tool-carriages are shown in Fig. 2, no limitation thus exists as to the number employed, thereby making the device 'adaptable for simultaneously cutting a plurality of strips.

In Fig. 5 is shown a modification of the device shown in Fig. 3, the modification having reference to the means for holding the material to be skived infirm contact with the travelingbelt 16. In this modification the lower face of the bodyportionAS of the t00lcariiage is provided with a vertical recess 64 in which is mounted a verticallyshiftable pin 65 surrounded by a coiled sprin 66 the normal tendency of which is to force the pin downwardly.

Pivotally secured to the lower ends of the pin 6d is a pressure foot 67 the object and function of which is to press the material downwardly into snug contact with the belt 16. 1 The function of the pressure foot 67 is precisely the same as the function of the pressure plate shown in Fig. 3 and a further necessary. The other mechanism of the skiving-tool-carriage shown in Fig. 5 is identical with the mechanism shown in Fig. 3.

\Ve claim 1. A skiving machine comprising a sup porting table, driving and idler rolls mounted'on opposite sides thereof, a traveling belt on said rolls arranged to move over the upper face of said table, a frame positioned above said traveling belt, a carriage adjustable on said frame longitudinally thereof, a knife carried by said carriage and arranged to skive or bevel material fed over said table by said belt, and a pressing member arranged to frictionally engage the upper surface of said material to hold said material in position-during the slziving operation.

2. A skiving machine comprising a sup porting table, driving and idler rolls on opposits sides thereof, a traveling belt on said rolls arranged to move. over the upper face of said table, a frame positioned above said belt, a carriage on said frame adjustable longitudinally thereof, a skiving tool mountedon said carriage and a pressure member arranged to engage material fed by said belt to said skiving tool at a point near where said material is engaged by said skiving tool for holding said material in frictional engagement with said belt.

3. A skiving machine comprising a supporting table, driving and idler rolls on opposite sides thereof, a traveling'belt on said rolls arranged to move over the upper face of said table, a shiftable carriagemounted sure member engaging the medium at a point near the ment of said slriving tool with said material.

7. A striving machine embodying a moving platform constituting a supporting me dium for material to be slrived, a shiItable carriage positioned above said platform, a rotary skiving tool supported thereby and adapted to engage the material on said platform for the skiving operation, said skiving tool being arranged at an inclination with respect to said platform, and a pressure member engaging the material on said me dium at a pointnear the point of engagement of said skiving tool with said material.

shil ing machine embodying a belt constituting a traveling platform to support the material to be slrived, slriving tools operating to make parallel. oblique cuts in said material extending in the same direction as the line Of travel of the material to thereby material on said form for the slciving operation, and a prespointv of engagedivide the material into a plurality of set our hands in presence of two subscribing strips extending longitudinally thereof, and witnesses. pressin means adapted to en 'a e the upper face ef the materiel. adjacent To ihe working ER edges of said skiving tools for holding said J materiel snugly in engagement with the Witnesses: moving platform. ROSE -M. Ln MIEUX, In testimony whereof we have hereunto ANNA J. GILHOOLK 

